Algebra terms

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Across
  1. 3. Point where a graph crosses an axis
  2. 6. Mathematical phrase without an equals sign
  3. 10. Number multiplying a variable or term
  4. 11. Fixed value that doesn’t change
  5. 13. A single part of an algebraic sum
  6. 17. U-shaped graph of a quadratic function
  7. 18. Straight-line relationship between variables
  8. 19. Comparison showing unequal values (e.g. <, >)
  9. 20. Mapping of each input to exactly one output
Down
  1. 1. Solution to an equation
  2. 2. Highest or lowest point on a parabola
  3. 4. Symbol representing unknown values
  4. 5. Clue
  5. 6. A statement that two expressions are equal
  6. 7. A number or expression multiplied to give a product
  7. 8. Expression with multiple terms
  8. 9. Set of all possible output values
  9. 12. Set of all possible input values
  10. 14. Rectangular array of numbers
  11. 15. Rate of change in a linear function
  12. 16. Polynomial of degree two